<div>Hi Ryan, Jason:</div>
<div> </div>
<div>Thanks so much for your reply.</div>
<div>I check the Standard SIP Profile & SIP trunk configuration, but I can't find the setting of changing transport from TCP to UDP. Could you advise how to do that? My CCM version is "6.0.1.2000-4". Appreciate~</div>
<div> </div>
<div>Regards,</div>
<div>Alan<br></div>
<div class="gmail_quote">On Tue, Jun 2, 2009 at 8:53 PM, Ryan Ratliff <span dir="ltr"><<a href="mailto:rratliff@cisco.com">rratliff@cisco.com</a>></span> wrote:<br>
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<p><span style="FONT-SIZE: 11pt; COLOR: #1f497d">I’m not sure what OnDO is but it’s rejecting the TCP session CUCM is trying to establish for the SIP call. You can try changing the transport from TCP to UDP in the SIP profile for the trunk.</span></p>
<p><span style="FONT-SIZE: 11pt; COLOR: #1f497d"> </span></p>
<p><span style="FONT-SIZE: 11pt; COLOR: #1f497d">-Ryan</span></p>
<p><span style="FONT-SIZE: 11pt; COLOR: #1f497d"> </span></p>
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<p><b><span style="FONT-SIZE: 10pt">From:</span></b><span style="FONT-SIZE: 10pt"> <a href="mailto:cisco-voip-bounces@puck.nether.net" target="_blank">cisco-voip-bounces@puck.nether.net</a> [mailto:<a href="mailto:cisco-voip-bounces@puck.nether.net" target="_blank">cisco-voip-bounces@puck.nether.net</a>] <b>On Behalf Of </b>Alan Su<br>
<b>Sent:</b> Tuesday, June 02, 2009 6:49 AM<br><b>To:</b> <a href="mailto:cisco-voip@puck.nether.net" target="_blank">cisco-voip@puck.nether.net</a><br><b>Subject:</b> [cisco-voip] SIP Trunk between CallManager 6 & OnDO Server</span></p>
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<p> </p>
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<p>Dear All,</p></div>
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<p> </p></div>
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<p>I'm having a problem to make call from IP Phone registered in CCM6 to SIP phone (X-lite) registered in OnDO.</p></div>
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<p> </p></div>
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<p>Topology:</p></div>
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<p>IPPhone -- CCM6 <-- SIP Trunk --> OnDO -- XLite</p></div>
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<p> </p></div>
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<p>All devices are in the same network segement.</p></div>
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<p> </p></div>
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<p>When I make a call from XLite to IPPhone, it works. But when I tried to make call from IPPhone to XLite, it just returned busy tone. I use Ethereal in OnDO server to capture packets, it did receive the packet from CCM6. The flow as below:</p>
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<p> </p></div>
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<p>1. (source) CCM6, (destination) OnDO, (protocol) TCP, (info) 38988 > sip [SYN] seq=0 win=5840 len=0 mss=1460 tsv=612823 tser</p></div>
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<p>2. (source) OnDO, (destination) CCM6, (protocol) TCP, (info) sip > 38988 [RST, ACK} seq=1 ack=1 win=0 len=0</p></div>
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<p> </p></div>
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<p>Any suggestion would be very grateful, thanks a lot~</p></div>
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<p> </p></div>
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<p>Regards,</p></div>
<div>
<p>Alan</p></div></div></div></div></div></blockquote></div><br>